____ brave Zhang Hua is!–Yes. He helped his neighbour, Mrs. Sun out of the fire.

He can’t go to visit the Palace Museum because he has _____things to do

The family is a cooperative enterprise for which it is difficult to _____ rules, because each family needs to work out its own ways to deal with its own problems.

Which of the following underlined parts is different in pronunciation from others

Our team leader told us more than one answer to the exercise _____ possible.